Need to make edits on the MODX Revolution website

Need to make edits on the modx Revolution 2.8.3 website
1.Fix broken filters
2. Fix the location of the modals
3. Minor edits such as mask, etc.
This is only the first list of works, then it will be as cooperation progresses.

In the response, please be sure to indicate the confirmed experience of developing / editing sites on MODX, the cost of an hour of work, how much time you are ready to devote to the project per week.
Teams and studios are not interesting. Work only directly with the developer.